Patents by Inventor Michel Ries

Michel Ries has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Photocatalytic rutile titanium dioxide
    Patent number: 7521039
    Abstract: The present invention is directed to photocatalytically active rutile titanium dioxide. The photocatalytically active rutile titanium dioxide of the present invention demonstrates enhanced activity in the visible light spectrum. It may be produced by neutralizing rutile seed to a higher pH than that at which it has traditionally been neutralized prior to washing and thermally treating the seed.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: April 21, 2009
    Assignee: Millennium Inorganic Chemicals, Inc.
    Inventors: Claire Bygott, Michel Ries, Stephen P. Kinniard
  • Photocatalytic rutile titanium dioxide
    Publication number: 20040092393
    Abstract: The present invention is directed to photocatalytically active rutile titanium dioxide. The photocatalytically active rutile titanium dioxide of the present invention demonstrates enhanced activity in the visible light spectrum. It may be produced by neutralizing rutile seed to a higher pH than that at which it has traditionally been neutralized prior to washing and thermally treating the seed.
    Type: Application
    Filed: November 8, 2002
    Publication date: May 13, 2004
    Inventors: Claire Bygott, Michel Ries, Stephen P. Kinniard
  • Production of finely divided rare earth ammonium oxalates/finely divided rare earth oxides
    Patent number: 5518703
    Abstract: Very finely divided ammonium rare earth double oxalates, readily converted into corresponding rare earth oxides by calcination, such oxides being well adopted, e.g., for the production of luminescent compounds therefrom, are prepared by (a) admixing a second solution of a rare earth compound, e.g., a salt, with a first solution containing oxalate and ammonium ions, (b) then separating the precipitate thus obtained from such mixed solution of reaction, and (c) optionally, drying the separated precipitate.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: May 21, 1996
    Assignee: Rhone-Poulenc Chimie
    Inventors: Bernard-Antoine Dissaux, Jean-Luc Le Loarer, Bernard Pacaud, Michel Ries
  • Recovery of vanadium values
    Patent number: 4913885
    Abstract: Vanadium values useful for catalyst regeneration are recovered from compositions/materials comprised thereof, typically spent V.sub.2 O.sub.5 catalysts, by intimately contacting an aqueous suspension of such a material with a gaseous admixture of sulfur dioxide and oxygen, whereby a phase separation thus results, and recovering an aqueous phase constituting a solution of vanadium values.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: April 3, 1990
    Assignee: Rhone-Poulenc Chimie
    Inventors: Francoise Seon, Michel Ries
  • Heteropolymetallic clusters, methods of making such clusters, and catalysts utilizing such clusters
    Patent number: 4609639
    Abstract: Heteropolymetallic clusters of the formula Pd.sub.2 (Fe).sub.x (CO).sub.4 [CO(NO).sub.2 ].sub.y [bis(diphenylphosphine)methane].sub.2 wherein x is 1 or 2 and y is 0 or 1; x=2 when y=1 and x=1 when y=0; to the method of making such clusters by reacting Pd.sub.2 Cl.sub.2 [bis(diphenylphosphine)methane] with MnFe(CO).sub.3 Z wherein M is an alkaline metal and Z is CO (n=2) or NO (n=1); and to the novel catalysts formed utilizing said clusters.
    Type: Grant
    Filed: January 14, 1985
    Date of Patent: September 2, 1986
    Assignee: ATOCHEM
    Inventors: Pierre Braunstein, Jacques Kervennal, Jean-Luc Richert, Michel Ries